Avi Loeb Says 3I/ATLAS May Have Seeded Life as Object Passed Near Multiple Planets
Updated
Updated · Futurism · May 26
Avi Loeb Says 3I/ATLAS May Have Seeded Life as Object Passed Near Multiple Planets
4 articles · Updated · Futurism · May 26
Harvard astronomer Avi Loeb argued in a new blog post that interstellar object 3I/ATLAS may have released the building blocks of life during its passage through the solar system last year.
3I/ATLAS drew his attention after observations showed it passed surprisingly close to several planets, a trajectory Loeb says could fit either natural panspermia or a deliberate “directed panspermia” mission.
Loeb said life could have survived inside the object's icy material and been shed near planets, while also reviving his broader, disputed view that the visitor may have had an artificial origin.
Panspermia remains highly contested, with many scientists arguing life's ingredients were already present on Earth, but Loeb says future probes should intercept similar interstellar objects to test for extrasolar biology.
Could this interstellar visitor's strange chemical makeup be the true building blocks for life on other worlds?
Why does a Harvard astronomer suggest alien origins for a comet with strong evidence of being a natural body?
What does this comet's record-breaking 'heavy water' reveal about the alien star system where it was born?
3I/ATLAS: The Third Interstellar Visitor—Discovery, Anomalies, and the Debate Over Life’s Origins
Overview
In July 2025, the arrival of 3I/ATLAS, the third confirmed interstellar object, captivated the astronomical community and sparked significant scientific interest. Its unique trajectory, closely aligned with the ecliptic plane, made it an ideal candidate for study and potential probe missions. This alignment could allow probes to monitor planetary transits and even observe changes on Earth in real time. Early data from the SPHEREx observatory revealed icy fragments, but as 3I/ATLAS neared the Sun, its composition shifted, unveiling organic molecules. These discoveries offer a rare chance to study material from beyond our solar system and explore the origins of life.